EP3514627B1 - Fotopolymerzusammensetzung, hologramm-aufzeichnungsmedium, optisches element und holographisches aufzeichnungsverfahren - Google Patents
Fotopolymerzusammensetzung, hologramm-aufzeichnungsmedium, optisches element und holographisches aufzeichnungsverfahren Download PDFInfo
- Publication number
- EP3514627B1 EP3514627B1 EP18860372.4A EP18860372A EP3514627B1 EP 3514627 B1 EP3514627 B1 EP 3514627B1 EP 18860372 A EP18860372 A EP 18860372A EP 3514627 B1 EP3514627 B1 EP 3514627B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- photopolymer composition
- silane
- weight
- functional group
- acrylate
- Prior art date
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- 239000000203 mixture Substances 0.000 title claims description 81
- 238000000034 method Methods 0.000 title claims description 34
- 230000003287 optical effect Effects 0.000 title claims description 23
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 71
- 125000000524 functional group Chemical group 0.000 claims description 66
- 229910000077 silane Inorganic materials 0.000 claims description 66
- 239000000178 monomer Substances 0.000 claims description 57
- 229920000642 polymer Polymers 0.000 claims description 42
- 150000004757 linear silanes Chemical class 0.000 claims description 37
- 239000003431 cross linking reagent Substances 0.000 claims description 35
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 33
- 239000011159 matrix material Substances 0.000 claims description 29
- 229920003122 (meth)acrylate-based copolymer Polymers 0.000 claims description 26
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 15
- 229920000570 polyether Polymers 0.000 claims description 15
- 239000007795 chemical reaction product Substances 0.000 claims description 12
- 239000002243 precursor Substances 0.000 claims description 11
- 230000002165 photosensitisation Effects 0.000 claims description 8
- 239000003504 photosensitizing agent Substances 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 5
- 230000001427 coherent effect Effects 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims description 4
- 230000000379 polymerizing effect Effects 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 3
- -1 1-methylpentyl Chemical group 0.000 description 41
- 238000002360 preparation method Methods 0.000 description 36
- 150000001875 compounds Chemical class 0.000 description 25
- 238000004132 cross linking Methods 0.000 description 19
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 17
- 239000000126 substance Substances 0.000 description 16
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 14
- 125000004432 carbon atom Chemical group C* 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 14
- 229910052731 fluorine Inorganic materials 0.000 description 14
- 239000011737 fluorine Substances 0.000 description 14
- 239000003505 polymerization initiator Substances 0.000 description 14
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 description 12
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 12
- 238000003756 stirring Methods 0.000 description 12
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 125000000217 alkyl group Chemical group 0.000 description 10
- 239000003960 organic solvent Substances 0.000 description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 239000004793 Polystyrene Substances 0.000 description 9
- 229920002223 polystyrene Polymers 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 8
- 238000006116 polymerization reaction Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 230000007423 decrease Effects 0.000 description 7
- 239000010410 layer Substances 0.000 description 7
- 239000004014 plasticizer Substances 0.000 description 7
- PBKONEOXTCPAFI-UHFFFAOYSA-N 1,2,4-trichlorobenzene Chemical compound ClC1=CC=C(Cl)C(Cl)=C1 PBKONEOXTCPAFI-UHFFFAOYSA-N 0.000 description 6
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 6
- 239000012948 isocyanate Substances 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 5
- OZAIFHULBGXAKX-VAWYXSNFSA-N AIBN Substances N#CC(C)(C)\N=N\C(C)(C)C#N OZAIFHULBGXAKX-VAWYXSNFSA-N 0.000 description 5
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 5
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 5
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 description 5
- 230000009477 glass transition Effects 0.000 description 5
- 229920005862 polyol Polymers 0.000 description 5
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 5
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 5
- VVBLNCFGVYUYGU-UHFFFAOYSA-N 4,4'-Bis(dimethylamino)benzophenone Chemical compound C1=CC(N(C)C)=CC=C1C(=O)C1=CC=C(N(C)C)C=C1 VVBLNCFGVYUYGU-UHFFFAOYSA-N 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 4
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 4
- 125000002947 alkylene group Chemical group 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 4
- 239000003999 initiator Substances 0.000 description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 4
- 239000010452 phosphate Substances 0.000 description 4
- 150000003077 polyols Chemical class 0.000 description 4
- OARRHUQTFTUEOS-UHFFFAOYSA-N safranin Chemical compound [Cl-].C=12C=C(N)C(C)=CC2=NC2=CC(C)=C(N)C=C2[N+]=1C1=CC=CC=C1 OARRHUQTFTUEOS-UHFFFAOYSA-N 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 3
- 239000012965 benzophenone Substances 0.000 description 3
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 150000001721 carbon Chemical group 0.000 description 3
- 239000007810 chemical reaction solvent Substances 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000012263 liquid product Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 3
- 229920005596 polymer binder Polymers 0.000 description 3
- 239000002491 polymer binding agent Substances 0.000 description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 3
- 239000000376 reactant Substances 0.000 description 3
- FRGPKMWIYVTFIQ-UHFFFAOYSA-N triethoxy(3-isocyanatopropyl)silane Chemical compound CCO[Si](OCC)(OCC)CCCN=C=O FRGPKMWIYVTFIQ-UHFFFAOYSA-N 0.000 description 3
- KWVGIHKZDCUPEU-UHFFFAOYSA-N 2,2-dimethoxy-2-phenylacetophenone Chemical compound C=1C=CC=CC=1C(OC)(OC)C(=O)C1=CC=CC=C1 KWVGIHKZDCUPEU-UHFFFAOYSA-N 0.000 description 2
- UHFFVFAKEGKNAQ-UHFFFAOYSA-N 2-benzyl-2-(dimethylamino)-1-(4-morpholin-4-ylphenyl)butan-1-one Chemical compound C=1C=C(N2CCOCC2)C=CC=1C(=O)C(CC)(N(C)C)CC1=CC=CC=C1 UHFFVFAKEGKNAQ-UHFFFAOYSA-N 0.000 description 2
- XLLIQLLCWZCATF-UHFFFAOYSA-N 2-methoxyethyl acetate Chemical compound COCCOC(C)=O XLLIQLLCWZCATF-UHFFFAOYSA-N 0.000 description 2
- 125000005916 2-methylpentyl group Chemical group 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N Bisphenol A Natural products C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical class S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 description 2
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
- 229920001400 block copolymer Polymers 0.000 description 2
- 238000011088 calibration curve Methods 0.000 description 2
- 238000004440 column chromatography Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 125000001033 ether group Chemical group 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- NIHNNTQXNPWCJQ-UHFFFAOYSA-N fluorene Chemical compound C1=CC=C2CC3=CC=CC=C3C2=C1 NIHNNTQXNPWCJQ-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 2
- 150000002460 imidazoles Chemical class 0.000 description 2
- JMMWKPVZQRWMSS-UHFFFAOYSA-N isopropyl acetate Chemical compound CC(C)OC(C)=O JMMWKPVZQRWMSS-UHFFFAOYSA-N 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000005056 polyisocyanate Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 229920005604 random copolymer Polymers 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- 125000001973 tert-pentyl group Chemical group [H]C([H])([H])C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 150000003512 tertiary amines Chemical class 0.000 description 2
- ANRHNWWPFJCPAZ-UHFFFAOYSA-M thionine Chemical compound [Cl-].C1=CC(N)=CC2=[S+]C3=CC(N)=CC=C3N=C21 ANRHNWWPFJCPAZ-UHFFFAOYSA-M 0.000 description 2
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- QNODIIQQMGDSEF-UHFFFAOYSA-N (1-hydroxycyclohexyl)-phenylmethanone Chemical compound C=1C=CC=CC=1C(=O)C1(O)CCCCC1 QNODIIQQMGDSEF-UHFFFAOYSA-N 0.000 description 1
- DLDWUFCUUXXYTB-UHFFFAOYSA-N (2-oxo-1,2-diphenylethyl) 4-methylbenzenesulfonate Chemical compound C1=CC(C)=CC=C1S(=O)(=O)OC(C=1C=CC=CC=1)C(=O)C1=CC=CC=C1 DLDWUFCUUXXYTB-UHFFFAOYSA-N 0.000 description 1
- FVMNARAKYNRZID-UHFFFAOYSA-M (2z)-1-ethyl-2-[(e)-3-(1-ethylquinolin-1-ium-2-yl)prop-2-enylidene]quinoline;chloride Chemical compound [Cl-].C1=CC2=CC=CC=C2N(CC)C1=CC=CC1=CC=C(C=CC=C2)C2=[N+]1CC FVMNARAKYNRZID-UHFFFAOYSA-M 0.000 description 1
- WMAVHUWINYPPKT-UHFFFAOYSA-M (e)-3-methyl-n-[(e)-(1-methyl-2-phenylindol-1-ium-3-ylidene)amino]-1,3-thiazol-2-imine;chloride Chemical compound [Cl-].C12=CC=CC=C2N(C)C(C=2C=CC=CC=2)=C1N=NC=1SC=C[N+]=1C WMAVHUWINYPPKT-UHFFFAOYSA-M 0.000 description 1
- YOBOXHGSEJBUPB-MTOQALJVSA-N (z)-4-hydroxypent-3-en-2-one;zirconium Chemical compound [Zr].C\C(O)=C\C(C)=O.C\C(O)=C\C(C)=O.C\C(O)=C\C(C)=O.C\C(O)=C\C(C)=O YOBOXHGSEJBUPB-MTOQALJVSA-N 0.000 description 1
- KYVBNYUBXIEUFW-UHFFFAOYSA-N 1,1,3,3-tetramethylguanidine Chemical compound CN(C)C(=N)N(C)C KYVBNYUBXIEUFW-UHFFFAOYSA-N 0.000 description 1
- ZOMLUNRKXJYKPD-UHFFFAOYSA-N 1,3,3-trimethyl-2-[2-(2-methylindol-3-ylidene)ethylidene]indole;hydrochloride Chemical compound [Cl-].C1=CC=C2C(C)(C)C(/C=C/C=3C4=CC=CC=C4NC=3C)=[N+](C)C2=C1 ZOMLUNRKXJYKPD-UHFFFAOYSA-N 0.000 description 1
- PCHXZXKMYCGVFA-UHFFFAOYSA-N 1,3-diazetidine-2,4-dione Chemical compound O=C1NC(=O)N1 PCHXZXKMYCGVFA-UHFFFAOYSA-N 0.000 description 1
- YHMYGUUIMTVXNW-UHFFFAOYSA-N 1,3-dihydrobenzimidazole-2-thione Chemical compound C1=CC=C2NC(S)=NC2=C1 YHMYGUUIMTVXNW-UHFFFAOYSA-N 0.000 description 1
- VNQXSTWCDUXYEZ-UHFFFAOYSA-N 1,7,7-trimethylbicyclo[2.2.1]heptane-2,3-dione Chemical compound C1CC2(C)C(=O)C(=O)C1C2(C)C VNQXSTWCDUXYEZ-UHFFFAOYSA-N 0.000 description 1
- BIAAQBNMRITRDV-UHFFFAOYSA-N 1-(chloromethoxy)-2-methoxyethane Chemical compound COCCOCCl BIAAQBNMRITRDV-UHFFFAOYSA-N 0.000 description 1
- PPNCOQHHSGMKGI-UHFFFAOYSA-N 1-cyclononyldiazonane Chemical compound C1CCCCCCCC1N1NCCCCCCC1 PPNCOQHHSGMKGI-UHFFFAOYSA-N 0.000 description 1
- VZAWCLCJGSBATP-UHFFFAOYSA-N 1-cycloundecyl-1,2-diazacycloundecane Chemical compound C1CCCCCCCCCC1N1NCCCCCCCCC1 VZAWCLCJGSBATP-UHFFFAOYSA-N 0.000 description 1
- 125000006218 1-ethylbutyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000012956 1-hydroxycyclohexylphenyl-ketone Substances 0.000 description 1
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 1
- OEBXWWBYZJNKRK-UHFFFAOYSA-N 1-methyl-2,3,4,6,7,8-hexahydropyrimido[1,2-a]pyrimidine Chemical compound C1CCN=C2N(C)CCCN21 OEBXWWBYZJNKRK-UHFFFAOYSA-N 0.000 description 1
- 238000005160 1H NMR spectroscopy Methods 0.000 description 1
- AZUHIVLOSAPWDM-UHFFFAOYSA-N 2-(1h-imidazol-2-yl)-1h-imidazole Chemical class C1=CNC(C=2NC=CN=2)=N1 AZUHIVLOSAPWDM-UHFFFAOYSA-N 0.000 description 1
- PTTPXKJBFFKCEK-UHFFFAOYSA-N 2-Methyl-4-heptanone Chemical compound CC(C)CC(=O)CC(C)C PTTPXKJBFFKCEK-UHFFFAOYSA-N 0.000 description 1
- UWOSNAGVFGKPDL-UHFFFAOYSA-N 2-[(2,5-dinitrophenyl)methyl]-4-methylbenzenesulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C(CC=2C(=CC=C(C=2)[N+]([O-])=O)[N+]([O-])=O)=C1 UWOSNAGVFGKPDL-UHFFFAOYSA-N 0.000 description 1
- BFMDZOWJRVLYPB-UHFFFAOYSA-N 2-[2-[2-(1,1-difluoro-2-hydroxyethoxy)-1,1,2,2-tetrafluoroethoxy]-1,1,2,2-tetrafluoroethoxy]-2,2-difluoroethanol Chemical compound OCC(F)(F)OC(F)(F)C(F)(F)OC(F)(F)C(F)(F)OC(F)(F)CO BFMDZOWJRVLYPB-UHFFFAOYSA-N 0.000 description 1
- 125000006176 2-ethylbutyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(C([H])([H])*)C([H])([H])C([H])([H])[H] 0.000 description 1
- RIYRDRZNXDRTIL-UHFFFAOYSA-L 2-ethylhexanoate;zirconium(2+) Chemical compound [Zr+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O RIYRDRZNXDRTIL-UHFFFAOYSA-L 0.000 description 1
- JJZNCUHIYJBAMS-UHFFFAOYSA-N 3-phenyl-2h-1,2-oxazol-5-one Chemical compound N1OC(=O)C=C1C1=CC=CC=C1 JJZNCUHIYJBAMS-UHFFFAOYSA-N 0.000 description 1
- KBQVDAIIQCXKPI-UHFFFAOYSA-N 3-trimethoxysilylpropyl prop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C=C KBQVDAIIQCXKPI-UHFFFAOYSA-N 0.000 description 1
- 125000004920 4-methyl-2-pentyl group Chemical group CC(CC(C)*)C 0.000 description 1
- PJMDLNIAGSYXLA-UHFFFAOYSA-N 6-iminooxadiazine-4,5-dione Chemical group N=C1ON=NC(=O)C1=O PJMDLNIAGSYXLA-UHFFFAOYSA-N 0.000 description 1
- REPMZEQSQQAHJR-UHFFFAOYSA-N 7-(diethylamino)-3,4-dioxo-10H-phenoxazine-1-carboxamide hydrochloride Chemical compound [Cl-].OC(=[NH2+])C1=CC(=O)C(=O)C2=C1NC1=CC=C(N(CC)CC)C=C1O2 REPMZEQSQQAHJR-UHFFFAOYSA-N 0.000 description 1
- IBPADELTPKRSCQ-UHFFFAOYSA-N 9h-fluoren-1-yl prop-2-enoate Chemical compound C1C2=CC=CC=C2C2=C1C(OC(=O)C=C)=CC=C2 IBPADELTPKRSCQ-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 1
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
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Classifications
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
- C08F2/50—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F299/00—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers
- C08F299/02—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates
- C08F299/026—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates from the reaction products of polyepoxides and unsaturated monocarboxylic acids, their anhydrides, halogenides or esters with low molecular weight
- C08F299/028—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates from the reaction products of polyepoxides and unsaturated monocarboxylic acids, their anhydrides, halogenides or esters with low molecular weight photopolymerisable compositions
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L43/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium or a metal; Compositions of derivatives of such polymers
- C08L43/04—Homopolymers or copolymers of monomers containing silicon
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- G—PHYSICS
- G02—OPTICS
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- G02B5/20—Filters
- G02B5/203—Filters having holographic or diffractive elements
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/0005—Production of optical devices or components in so far as characterised by the lithographic processes or materials used therefor
- G03F7/001—Phase modulating patterns, e.g. refractive index patterns
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/0046—Photosensitive materials with perfluoro compounds, e.g. for dry lithography
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/032—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders
- G03F7/033—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders the binders being polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/075—Silicon-containing compounds
- G03F7/0757—Macromolecular compounds containing Si-O, Si-C or Si-N bonds
- G03F7/0758—Macromolecular compounds containing Si-O, Si-C or Si-N bonds with silicon- containing groups in the side chains
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
- G03H2001/0208—Individual components other than the hologram
- G03H2001/0216—Optical components
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
- G03H2001/026—Recording materials or recording processes
- G03H2001/0264—Organic recording material
Definitions
- the present invention relates to a photopolymer composition, a hologram recording medium, an optical element, and a holographic recording method.
- a hologram recording medium records information by changing a refractive index in a holographic recording layer in the medium through an exposure process, reads variation of the refractive index in the medium thus recorded, and reproduces the information.
- the photopolymer When a photopolymer (photosensitive resin) is used, a light interference pattern can be easily stored as a hologram by photopolymerization of a low molecular weight monomer. Therefore, the photopolymer can be used in various fields such as optical lenses, mirrors, deflecting mirrors, filters, diffusing screens, diffraction elements, light guides, waveguides, holographic optical elements having projection screen and/or mask functions, media of optical memory systems and light diffusion plates, optical wavelength multiplexers, reflection-type and transmission-type color filters, and the like.
- a photopolymer composition for hologram production includes a polymer binder, a monomer, and a photoinitiator, and the photosensitive film produced from such a composition is irradiated with laser interference light to induce photopolymerization of local monomers.
- the refractive index becomes high, and in a portion where a relatively large number of polymer binders are present, the refractive index is relatively lowered and thus the refractive index modulation occurs, and a diffraction grating is generated by such refractive index modulation.
- the value n of refractive index modulation is influenced by the thickness and the diffraction efficiency (DE) of the photopolymer layer, and the angular selectivity increases as the thickness decreases.
- WO 2011/034847 describes fluorinated coatings and phototools made therewith.
- the coating includes an oligomer that is a reaction product of an epoxy silane, a multifunctional (meth)acrylate and a polymerizable fluorochemical.
- the polymerizable fluorochemical can be a fluorinated (meth)acrylate or a polymerizable fluorinated urethane.
- a method of making a printed assembly such as a printed circuit board is also disclosed.
- the present invention provides a photopolymer composition including: a polymer matrix or a precursor thereof including a reaction product between (i) a (meth)acrylate-based (co)polymer in which a silane-based functional group is located in a branched chain and an equivalent weight of the silane-based functional group is 300 g/eq to 2000 g/eq and (ii) a linear silane crosslinking agent; a photoreactive monomer; and a photoinitiator, as claimed in claim 1 with embodiments in claims 2-12.
- the present invention provides a hologram recording medium produced from the above-described photopolymer composition, as claimed in claim 13.
- the present invention provides an optical element including the above-described hologram recording medium, as claimed in claim 14.
- the present invention provides a holographic recording method including selectively polymerizing photoreactive monomers contained in the photopolymer composition by a coherent laser, as claimed in claim 15.
- (meth)acrylate refers to either methacrylate or acrylate.
- (co)polymer refers to either a homopolymer or a copolymer (including a random copolymer, a block copolymer, and a graft copolymer).
- hologram refers to a recording medium in which optical information is recorded in an entire visible range and a near ultraviolet range (300 to 800 nm) through an exposure process, and examples thereof include all of visual holograms such as in-line (Gabor) holograms, off-axis holograms, full-aperture transfer holograms, white light transmission holograms ("rainbow holograms”), Denisyuk holograms, off-axis reflection holograms, edge-lit holograms or holographic stereograms.
- visual holograms such as in-line (Gabor) holograms, off-axis holograms, full-aperture transfer holograms, white light transmission holograms (“rainbow holograms”), Denisyuk holograms, off-axis reflection holograms, edge-lit holograms or holographic stereograms.
- the alkyl group may be a straight chain or a branched chain alkyl, and the number of carbon atoms thereof is not particularly limited, but is preferably 1 to 40. According to one embodiment, the alkyl group has 1 to 20 carbon atoms. According to another embodiment, the alkyl group has 1 to 10 carbon atoms. According to still another embodiment, the alkyl group has 1 to 6 carbon atoms.
- alkyl group examples include methyl, ethyl, propyl, n-propyl, isopropyl, butyl, n-butyl, isobutyl, tert-butyl, sec-butyl, 1-methyl-butyl, 1-ethyl-butyl, pentyl, n-pentyl, isopentyl, neopentyl, tert-pentyl, hexyl, n-hexyl, 1-methylpentyl, 2-methylpentyl, 4-methyl-2-pentyl, 3,3-dimethylbutyl, 2-ethylbutyl, heptyl, n-heptyl, 1-methylhexyl, cyclopentylmethyl, cyclohexylmethyl, octyl, n-octyl, tert-octyl, 1-methylheptyl, 2-ethylhexyl, 2-
- the alkylene group is a bivalent functional group derived from alkane, and may be, for example, a linear, branched, or cyclic methylene group, an ethylene group, a propylene group, an isobutylene group, a sec-butylene group, a tert-butylene group, a pentylene group, a hexylene group, and the like.
- a photopolymer composition including: a polymer matrix or a precursor thereof including a reaction product between (i) a (meth)acrylate-based (co)polymer in which a silane-based functional group is located in a branched chain and an equivalent weight of the silane-based functional group is 300 g/eq to 2000 g/eq, and (ii) a linear silane crosslinking agent; a photoreactive monomer; and a photoinitiator.
- holograms produced from the photopolymer composition including a polymeric matrix or a precursor thereof using a (meth)acrylate-based (co)polymer in which the silane-based functional group is located in a branched chain and the equivalent weight of the silane-based functional group is 300 g/eq to 2000 g/eq can achieve significantly improved refractive index modulation values and superior durability against temperature and humidity even in thinner thickness ranges as compared with holograms previously known in the art, thereby completing the present invention.
- the crosslinking density with the linear silane crosslinking agent is optimized and thus superior durability against temperature and humidity can be ensured as compared with conventional matrices.
- the mobility between a photoreactive monomer having a high refractive index and a component having a low refractive index can be increased, thereby maximizing the refractive index modulation and improving the recording characteristics.
- a crosslinked structure mediating a siloxane bond can be easily introduced through a sol-gel reaction between a modified (meth)acrylate-based (co)polymer containing a silane-based functional group and a linear silane crosslinking agent containing a terminal silane-based functional group, and excellent durability against temperature and humidity can be ensured through such siloxane bond.
- a fluorine-based compound, a phosphate-based compound, or the like can be further included as a component of the polymer matrix or its precursor. Since the fluorine-based compound or the phosphate-based compound can have a lower refractive index than the photoreactive monomer, it is possible to lower the refractive index of the polymer matrix and thus maximize the refractive index modulation of the photopolymer composition.
- the phosphate-based compound acts as a plasticizer to lower the glass transition temperature of the polymer matrix and increase the mobility of photoreactive monomers and low refractive index components, which also contributes to improving the formability of the photopolymer composition.
- the polymer matrix may serve as a support for the final product such as the photopolymer composition and a film produced therefrom.
- the hologram formed from the photopolymer composition it may serve as a portion having a different refractive index to enhance the refractive index modulation.
- the polymer matrix may include a reaction product between (i) a (meth)acrylate-based (co)polymer in which a silane-based functional group is located in a branched chain and an equivalent weight of the silane-based functional group is 300 g/eq to 2000 g/eq, and (ii) a linear silane crosslinking agent.
- the precursor of the polymer matrix includes a monomer or an oligomer forming the polymer matrix.
- it may include a (meth)acrylate-based (co)polymer in which the silane-based functional group is located in the branched chain and the equivalent weight of the silane-based functional group is 300 g/eq to 2000 g/eq, or a monomer thereof or an oligomer of the monomer, and a linear silane crosslinking agent, or a monomer thereof or an oligomer of the monomer.
- the silane-based functional group may be located in a branched chain.
- the silane-based functional group may include a silane functional group or an alkoxysilane functional group.
- a trimethoxysilane group can be used as the alkoxysilane functional group.
- the silane-based functional group may form siloxane bonds through a sol-gel reaction with the silane-based functional group contained in the linear silane crosslinking agent to crosslink the (meth)acrylate-based (co)polymer and the linear silane crosslinking agent.
- the equivalent weight of the silane-based functional group may be 300 g/eq to 2000 g/eq, 500 g/eq to 2000 g/eq, 550 g/eq to 1800 g/eq, 580 g/eq to 1600 g/eq, or 586 g/eq to 1562 g/eq.
- the equivalent weight of the silane-based functional group is an equivalent weight (g/eq) for one silane-based functional group, which is a value obtained by dividing the weight average molecular weight of the (meth)acrylate-based (co)polymer by the number of silane-based functional groups per molecule. The smaller the silane-based functional group equivalent weight, the higher the functional group density. The higher the equivalent weight, the smaller the functional group density.
- the crosslinking density between the (meth)acrylate-based (co)polymer and the linear silane crosslinking agent can be optimized, thereby ensuring superior durability against temperature and humidity as compared with conventional matrices.
- the mobility between a photoreactive monomer having a high refractive index and a component having a low refractive index can be increased, thereby maximizing the refractive index modulation and improving the recording characteristics.
- the equivalent weight of the silane-based functional group contained in the (meth)acrylate-based (co)polymer is excessively decreased below 300 g/eq, the crosslinking density of the matrix becomes too high and the mobility of the components is inhibited, thereby causing a decrease in the recording characteristics. Further, when the equivalent weight of the silane-based functional group contained in the (meth)acrylate-based (co)polymer is excessively increased beyond 2000 g/eq, the crosslinking density is too low to serve as a support, and the diffraction grating interface formed after recording is collapsed, so that the refractive index modulation value can be reduced with the passage of time.
- the (meth)acrylate-based (co)polymer may include a (meth)acrylate repeating unit in which the silane-based functional group is located in a branched chain, and a (meth)acrylate repeating unit.
- An example of the (meth)acrylate repeating unit in which the silane-based functional group is located in a branched chain may include a repeating unit represented by the following Chemical Formula 1.
- R 1 to R 3 are each independently an alkyl group having 1 to 10 carbon atoms
- R 4 is hydrogen or an alkyl group having 1 to 10 carbon atoms
- R 5 is an alkylene group having 1 to 10 carbon atoms.
- R 1 to R 3 are each independently a methyl group having one carbon atom
- R 4 is a methyl group having one carbon atom
- R 5 is a propylene group having 3 carbon atoms, which may be a repeating unit derived from methacryloxypropyltrimethoxysilane (KBM-503)
- R 1 to R 3 are each independently a methyl group having one carbon atom
- R 4 is hydrogen
- R 5 is a propylene group having 3 carbon atoms, which may be a repeating unit derived from 3-acryloxypropyltrimethoxysilane (KBM-5103).
- an example of the (meth)acrylate repeating unit may include a repeating unit represented by the following Chemical Formula 2.
- R 6 is an alkyl group having 1 to 20 carbon atoms
- R 7 is hydrogen or an alkyl group having 1 to 10 carbon atoms.
- R 6 is a butyl group having 4 carbon atoms
- R 7 is hydrogen, which may be a repeating unit derived from butyl acrylate.
- the molar ratio between the repeating unit of Chemical Formula 2 and the repeating unit of Chemical Formula 1 may be 0.5:1 to 14:1.
- the molar ratio of the repeating unit of Chemical Formula 1 excessively decreases, the crosslinking density of the matrix becomes too low to serve as a support, resulting in a decrease in recording characteristics after recording.
- the molar ratio of the repeating unit of Chemical Formula 1 is excessively increased, the crosslinking density of the matrix becomes too high and the mobility of the respective components decreases, resulting in a decrease in the refractive index modulation value.
- the weight average molecular weight (measured by GPC) of the (meth)acrylate-based (co)polymer may be 100,000 g/mol to 5,000,000 g/mol, or 300,000 g/mol to 900,000 g/mol.
- the weight average molecular weight means a weight average molecular weight in terms of polystyrene measured by the GPC method.
- a commonly known analyzing device, a detector such as a refractive index detector, and an analytical column can be used. Commonly applied conditions for temperature, solvent, and flow rate can be used.
- a Waters PL-GPC220 instrument was used with a PLgel MIX-B column (length of 300 mm) from Polymer Laboratories, the evaluation temperature was 160 °C, 1,2,4-trichlorobenzene was used as a solvent, and the flow rate was 1 mL/min.
- the sample was prepared at a concentration of 10 mg/10 mL, and then supplied in an amount of 200 ⁇ L.
- the value of Mw can be determined using the calibration curve generated with polystyrene standards.
- Nine types of the polystyrene standards with respective molecular weights of 2000, 10,000, 30,000, 70,000, 200,000, 700,000, 2,000,000, 4,000,000, and 10,000,000 were used.
- the linear silane crosslinking agent may be a compound having an average of at least one silane-based functional group per molecule or a mixture thereof, and it may be a compound containing at least one silane-based functional group.
- the silane-based functional group may include a silane functional group or an alkoxysilane functional group.
- a triethoxysilane group can be used as the alkoxysilane functional group.
- the silane-based functional group can form siloxane bonds through a sol-gel reaction with the silane-based functional group contained in the (meth)acrylate-based (co)polymer, thereby crosslinking the (meth)acrylate-based (co)polymer and the linear silane crosslinking agent.
- the linear silane crosslinking agent may have a silane-based functional group equivalent weight of 200 g/eq to 1000 g/eq, 300 g/eq to 900 g/eq, 400 g/eq to 800 g/eq, 440 e/eq to 750 g/eq, or 447 g/eq to 747 g/eq.
- the crosslinking density between the (meth)acrylate-based (co)polymer and the linear silane crosslinking agent can be optimized, thereby ensuring superior durability against temperature and humidity as compared with conventional matrices.
- the mobility between a photoreactive monomer having a high refractive index and a component having a low refractive index can be increased, thereby maximizing the refractive index modulation and improving the recording characteristics.
- the equivalent weight of the silane-based functional group contained in the linear silane crosslinking agent is excessively increased to 1000 g/eq or more, the diffraction grating interface after recording may be collapsed due to the decrease of the crosslinking density of the matrix.
- the monomer and plasticizer components can be eluted on the surface to cause haze.
- the equivalent weight of the silane-based functional group contained in the linear silane crosslinking agent is excessively reduced to less than 200 g/eq, the crosslinking density becomes too high and the mobility of the monomer and the plasticizer component is inhibited, thereby causing a problem that the recording characteristics are remarkably lowered.
- the ratio between the equivalent weight of the silane-based functional groups located in the branched chain of the (meth)acrylate-based (co)polymer and the equivalent weight of the silane-based functional groups contained in the linear silane crosslinking agent is from 22:1 to 0.5:1, from 20:1 to 0.5:1, from 15:1 to 0.5:1, from 10:1 to 0.5:1, from 5:1 to 0.6:1, from 4:1 to 0.7:1, or from 3.5:1 to 0.78:1. Therefore, the crosslinking density between the (meth)acrylate-based (co)polymer and the linear silane crosslinking agent can be optimized, thereby ensuring superior durability against temperature and humidity as compared with conventional matrices.
- the mobility between a photoreactive monomer having a high refractive index and a component having a low refractive index can be increased, thereby maximizing the refractive index modulation and improving the recording characteristics.
- the linear silane crosslinking agent may include a linear polyether main chain having a weight average molecular weight of 100 g/mol to 2000 g/mol, 300 g/mol to 1000 g/mol, or 300 g/mol to 700 g/mol, and a silane-based functional group bonded to the terminal or branched chain of the main chain.
- the linear polyether main chain having a weight average molecular weight of 100 g/mol to 2000 g/mol may include a repeating unit represented by the following Chemical Formula 3. [Chemical Formula 3] -(R 8 O) n -R 8 -
- R 8 is an alkylene group having 1 to 10 carbon atoms, and n is an integer of 1 or more, 1 to 50, 5 to 20, or 8 to 10.
- the linear silane crosslinking agent introduces a flexible polyether polyol into a main chain, the mobility of the components can be improved through adjustment of the glass transition temperature and crosslinking density of the matrix.
- a bond between the silane-based functional group and the polyether main chain may be mediated by a urethane bond.
- the silane-based functional group and the polyether main chain may form a bond between them via a urethane bond.
- the silicon atom contained in the silane-based functional group binds directly to the nitrogen atom of the urethane bond or via an alkylene group having 1 to 10 carbon atoms.
- the functional group R 8 contained in the polyether main chain can be directly bonded to the oxygen atom of the urethane bond.
- the linear silane crosslinking agent is a reaction product produced through the reaction between an isocyanate compound containing a silane-based functional group and a linear polyether polyol compound having a weight average molecular weight of 100 g/mol to 2000 g/mol.
- the isocyanate compound may include an aliphatic, cycloaliphatic, aromatic, or aromatic-aliphatic mono-isocyanate, di-isocyanate, triisocyanate, or poly-isocyanate; or an oligo-isocyanate or poly-isocyanate of diisocyanate or triisocyanate having urethane, urea, carbodiimide, acylurea, isocyanurate, allophanate, biuret, oxadiazinetrione, uretdione, or iminooxadiazinedione structures.
- isocyanate compound containing the silane-based functional group examples include 3-isocyanatopropyltriethoxysilane.
- polyether polyol may be, for example, multiple addition products of styrene oxide, ethylene oxide, propylene oxide, tetrahydrofuran, butylene oxide, or epichlorohydrin, and their mixed addition products and graft products, polyether polyols and polyhydric alcohols obtained by condensation of polyhydric alcohols or mixtures thereof, and those obtained by alkoxylation of amines and amino alcohols.
- polyether polyol examples include poly(propylene oxide), poly(ethylene oxide), and combinations thereof, or poly(tetrahydrofuran) and mixtures thereof, which are in the form of random or block copolymers having OH functionality of 1.5 to 6 and a number average molecular weight between 200 g/mol and 18,000 g/mol, preferably OH functionality of 1.8 to 4.0 and a number average molecular weight between 600 g/mol and 8000 g/mol, and particularly preferably an OH functionality of 1.9 to 3.1 and a number average molecular weight between 650 g/mol and 4500 g/mol.
- the linear silane crosslinking agent has a weight average molecular weight (measured by GPC) of 500 g/mol to 5,000,000 g/mol, 600 g/mol to 10,000 g/mol, 700 g/mol to 5000 g/mol, 800 g/mol to 2000 g/mol, or 900 g/mol to 1500 g/mol.
- the weight average molecular weight means a weight average molecular weight in terms of polystyrene determined by the GPC method.
- a commonly known analyzing device, a detector such as a refractive index detector, and an analytical column can be used.
- a Waters PL-GPC220 instrument was used with a PLgel MIX-B column (length of 300 mm) from Polymer Laboratories, the evaluation temperature was 160 °C, 1,2,4-trichlorobenzene was used as a solvent, and the flow rate was 1 mL/min.
- the sample was prepared at a concentration of 10 mg/10 mL, and then supplied in an amount of 200 ⁇ L.
- the value of Mw can be determined using the calibration curve generated with polystyrene standards.
- Nine types of the polystyrene standards with respective molecular weights of 2000, 10,000, 30,000, 70,000, 200,000, 700,000, 2,000,000, 4,000,000, and 10,000,000 were used.
- the linear silane crosslinking agent may be contained in an amount of 10 parts by weight to 90 parts by weight, 20 parts by weight to 70 parts by weight, or 22 parts by weight to 65 parts by weight, based on 100 parts by weight of the (meth)acrylate-based (co)copolymer.
- the curing rate of the matrix is remarkably slow and the function as a support is lost, and the diffraction grating interface after recording can be easily collapsed.
- the content of the linear silane crosslinking agent in the reaction product is excessively increased relative to 100 parts by weight of the (meth)acrylate-based (co)polymer, the curing rate of the matrix becomes faster, but compatibility issues with other components arise due to an excessive increase in the content of the reactive silane group and thus haze occurs.
- the modulus (storage modulus) of the reaction product may be 0.01 MPa to 5 MPa.
- the value of storage modulus (G') can be measured at a frequency of 1 Hertz at room temperature (20 °C to 25 °C) using DHR (Discovery Hybrid Rheometer) equipment from TA Instruments.
- the glass transition temperature of the reaction product may be -40 °C to 10 °C.
- a specific example of the glass transition temperature measuring method includes a method of measuring a change in phase angle (loss modulus) of the film coated with a photopolymerizable composition in the temperature range from -80 °C to 30 °C under the setting conditions of strain of 0.1 %, frequency of 1 Hz, and temperature raising rate 5 °C/min by using DMA (dynamic mechanical analysis) measuring equipment.
- DMA dynamic mechanical analysis
- the photoreactive monomer may include a polyfunctional (meth)acrylate monomer or a monofunctional (meth)acrylate monomer.
- the refractive index becomes high.
- the refractive index modulation occurs, and diffraction grating is generated by such refractive index modulation.
- one example of the photoreactive monomer may include (meth)acrylate-based ⁇ , ⁇ -unsaturated carboxylic acid derivatives, for example, (meth)acrylate, (meth)acrylamide, (meth)acrylonitrile, (meth)acrylic acid, or the like, or a compound containing a vinyl group or a thiol group.
- (meth)acrylate-based ⁇ , ⁇ -unsaturated carboxylic acid derivatives for example, (meth)acrylate, (meth)acrylamide, (meth)acrylonitrile, (meth)acrylic acid, or the like, or a compound containing a vinyl group or a thiol group.
- the photoreactive monomer may include a polyfunctional (meth)acrylate monomer having a refractive index of 1.5 or more, 1.53 or more, or 1.5 to 1.7.
- the polyfunctional (meth)acrylate monomer having a refractive index of 1.5 or more, 1.53 or more, or 1.5 to 1.7 may include a halogen atom (bromine, iodine, etc.), sulfur (S), phosphorus (P), or an aromatic ring.
- polyfunctional (meth)acrylate monomer having the refractive index of 1.5 or more include a bisphenol A modified diacrylate type, a fluorene acrylate type (HR6022, Miwon Specialty Chemical Co., Ltd.), a bisphenol fluorene epoxy acrylate type (HR6100, HR6060, HR6042, etc.- Miwon), a halogenated epoxy acrylate type (HR1139, HR3362, etc., Miwon).
- the photoreactive monomer may include a monofunctional (meth)acrylate monomer.
- the monofunctional (meth)acrylate monomer may contain an ether bond and a fluorene functional group in the molecule.
- Specific examples of such monofunctional (meth)acrylate monomer include phenoxybenzyl (meth)acrylate, o-phenylphenol ethylene oxide (meth)acrylate, benzyl (meth)acrylate, 2-(phenylthio)ethyl (meth)acrylate, biphenylmethyl (meth)acrylate, or the like.
- the photoreactive monomer may have a weight average molecular weight of 50 g/mol to 1000 g/mol, or 200 g/mol to 600 g/mol.
- the weight average molecular weight means a weight average molecular weight in terms of polystyrene measured by the GPC method.
- the photopolymer composition of the embodiment includes a photoinitiator.
- the photoinitiator is a compound which is activated by light or actinic radiation, and initiates polymerization of a compound containing a photoreactive functional group such as the photoreactive monomer.
- photoinitiators can be used without particular limitation, but specific examples thereof include a photoradical polymerization initiator, a photocationic polymerization initiator, and a photoanionic polymerization initiator.
- photoradical polymerization initiator examples include imidazole derivatives, bisimidazole derivatives, N-aryl glycine derivatives, organic azide compounds, titanocene, aluminate complexes, organic peroxides, N-alkoxypyridinium salts, thioxanthone derivatives, amine derivatives, or the like.
- examples of the photoradical polymerization initiator include 3-di(t-butyldioxycarbonyl)benzophenone, 3,3',4,4"-tetrakis(t-butyldioxycarbonyl)benzophenone, 3-phenyl-5-isoxazolone, 2-mercapto benzimidazole, bis(2,4,5-triphenyl)imidazole, 2,2-dimethoxy-1,2-diphenylethane-1-one (product name: Irgacure 651, manufacturer: BASF), 1-hydroxy-cyclohexyl-phenyl-ketone (product name: Irgacure 184, manufacturer: BASF), 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)-butanone-1 (product name: Irgacure 369, manufacturer: BASF), and bis( ⁇ 5-2,4-cyclopentadiene-1-yl)-bis(2,6-difluoro-3-(1
- the photocationic polymerization initiator may include a diazonium salt, a sulfonium salt, or an iodonium salt, and examples thereof include sulfonic acid esters, imidosulfonates, dialkyl-4-hydroxysulfonium salts, arylsulfonic acid-p-nitrobenzyl esters, silanol-aluminum complexes, ( ⁇ 6-benzene) ( ⁇ 5-cyclopentadienyl)iron (II), or the like.
- benzoin tosylate, 2,5-dinitrobenzyltosylate, N-tosylphthalic acid imide, or the like can be mentioned.
- photocationic polymerization initiator examples include commercially available products such as Cyracure UVI-6970, Cyracure UVI-6974, and Cyracure UVI-6990 (manufacturer: Dow Chemical Co. in USA), Irgacure 264 and Irgacure 250 (manufacturer: BASF), or CIT-1682 (manufacturer: Nippon Soda).
- the photoanionic polymerization initiator may include a borate salt, and examples thereof include butyrylcholine butyl triphenyl borate or the like. More specific examples of the photoanionic polymerization initiator include commercially available products such as Borate V (manufacturer: Spectra Group) or the like.
- the photopolymer composition of the embodiment may include a monomolecular (type I) initiator or bimolecular (type II) initiator.
- the (type I) system for free radical photopolymerization may include, for example, an aromatic ketone compound in combination with a tertiary amine, such as benzophenone, alkylbenzophenone, 4,4'-bis(dimethylamino)benzophenone (Michler's ketone), anthrone, and halogenated benzophenone, or a mixture of these types.
- the bimolecular (type II) initiator may include benzoin and derivatives thereof, benzyl ketal, an acylphosphine oxide, for example, 2,4,6-trimethylbenzoyldiphenylphosphine oxide, bisacylophosphine oxide, phenylglyoxyl ester, camphorquinone, alpha-aminoalkylphenone, alpha-dialkoxyacetophenone, 1-[4-(phenylthio)phenyl] octane-1,2-dione 2-(O-benzoyloxime), alpha-hydroxyalkylphenone, and the like.
- acylphosphine oxide for example, 2,4,6-trimethylbenzoyldiphenylphosphine oxide, bisacylophosphine oxide, phenylglyoxyl ester, camphorquinone, alpha-aminoalkylphenone, alpha-dialkoxyacetophenone, 1-[4-(phenylthio)phen
- the photopolymer composition may include: 20 % to 80 % by weight of the polymer matrix or a precursor thereof; 10 % to 70 % by weight of the photoreactive monomer; and 0.1 % to 15 % by weight of the photoinitiator.
- the photopolymer composition further includes an organic solvent as described below, the content of the above-mentioned components is based on the sum of the above-mentioned components (the sum of the components excluding the organic solvent).
- the photopolymer composition may further include a fluorine-based compound.
- the fluorine-based compound has stability with little reactivity and has low refractive index characteristics. Therefore, when added to the photopolymer composition, the refractive index of the polymer matrix can be further lowered, and thus the refractive index modulation with the monomer can be maximized.
- the fluorine-based compound may include at least two difluoromethylene groups, and at least one functional group selected from the group consisting of an ether group, an ester group, and an amide group. More specifically, the fluorine-based compound may have a structure of the following Chemical Formula 4 in which a functional group containing an ether group is bonded to both terminals of a central functional group containing a direct bond or an ether bond between two difluoromethylene groups.
- R 11 and R 12 are each independently a difluoromethylene group
- R 13 and R 16 are each independently a methylene group
- R 14 and R 15 are each independently a difluoromethylene group
- R 17 and R 18 are each independently a polyalkylene oxide group
- m is an integer of 1 or more, 1 to 10, or 1 to 3.
- R 11 and R 12 are each independently a difluoromethylene group
- R 13 and R 16 are each independently a methylene group
- R 14 and R 15 are each independently a difluoromethylene group
- R 17 and R 18 are each independently a 2-methoxyethoxymethoxy group
- m is an integer of 2.
- the fluorine-based compound may have a refractive index of less than 1.45, or 1.3 or more and less than 1.45. As described above, since the photoreactive monomer has a refractive index of 1.5 or more, the fluorine-based compound can further lower the refractive index of the polymer matrix through a refractive index that is lower than that of the photoreactive monomer, thereby maximizing the refractive index modulation with the monomer.
- the content of the fluorine-based compound may be 30 parts by weight to 150 parts by weight, or 50 parts by weight to 110 parts by weight, based on 100 parts by weight of the photoreactive monomer, and the refractive index of the polymer matrix may be 1.46 to 1.53.
- the content of the fluorine-based compound When the content of the fluorine-based compound is excessively reduced relative to 100 parts by weight of the photoreactive monomer, the value of the refractive index modulation after recording is lowered due to the deficiency of low refractive index components.
- the content of the fluorine-based compound is excessively increased relative to 100 parts by weight of the photoreactive monomer, haze occurs due to compatibility issues with other components, or some fluorine-based compounds may be eluted on the surface of the coating layer.
- the fluorine-based compound may have a weight average molecular weight (measured by GPC) of 300 g/mol or more, or 300 g/mol to 1000 g/mol.
- GPC weight average molecular weight
- the photopolymer composition may further include a photosensitizing dye.
- the photosensitizing dye serves as photosensitizing pigment to sensitize the photoinitiator. More specifically, the photosensitizing dye may be stimulated by the light irradiated on the photopolymer composition and may also serve as an initiator to initiate polymerization of the monomer and the crosslinking monomer.
- the photopolymer composition may contain 0.01 % to 30 % by weight, or 0.05 % to 20 % by weight, of the photosensitizing dye.
- the photosensitizing dye are not particularly limited, and various compounds commonly known in the art can be used.
- Specific examples of the photosensitizing dye include sulfonium derivative of ceramidonine, new methylene blue, thioerythrosine triethylammonium, 6-acetylamino-2-methylceramidonin, eosin, erythrosine, rose bengal, thionine, basic yellow, Pinacyanol chloride, Rhodamine 6G, Gallocyanine, ethyl violet, Victoria blue R, Celestine blue), Quinaldine Red, Crystal Violet, Brilliant Green, Astrazon orange G, Darrow Red), Pyronin Y), Basic Red 29, pyrylium iodide, Safranin O, Cyanine, Methylene Blue, Azure A, or a combination of two or more thereof.
- the photopolymer composition may further include an organic solvent.
- organic solvent include ketones, alcohols, acetates ethers, and mixtures of two or more thereof.
- organic solvent examples include ketones such as methyl ethyl ketone, methyl isobutyl ketone, acetylacetone, or isobutyl ketone; alcohols such as methanol, ethanol, n-propanol, i-propanol, n-butanol, i-butanol, or t-butanol; acetates such as ethyl acetate, i-propyl acetate, or polyethylene glycol monomethyl ether acetate; ethers such as tetrahydrofuran or propylene glycol monomethyl ether; or a mixture of two or more thereof.
- ketones such as methyl ethyl ketone, methyl isobutyl ketone, acetylacetone, or isobutyl ketone
- alcohols such as methanol, ethanol, n-propanol, i-propanol, n-butanol, i
- the organic solvent may be added at the time of mixing the respective components contained in the photopolymer composition, or may be contained in the photopolymer composition while adding the respective components in a state of being dispersed or mixed in an organic solvent.
- the content of the organic solvent in the photopolymer composition is too low, the flowability of the photopolymer composition may be lowered, resulting in the occurrence of defects such as the occurrence of striped patterns on the finally produced film.
- the photopolymer composition may include an organic solvent such that the total solid content concentration of the components contained is 1 % to 70 % by weight, or 2 % to 50 % by weight.
- the photopolymer composition may further include other additives, catalysts, and the like.
- the photopolymer composition may include a catalyst which is commonly known for promoting polymerization of the polymer matrix or photoreactive monomer.
- the catalyst include tin octanoate, zinc octanoate, dibutyltin dilaurate, dimethylbis[(1-oxoneodecyl)oxy]stannane, dimethyl tin dicarboxylate, zirconium bis(ethylhexanoate), zirconium acetylacetonate, p-toluenesulfonic acid or tertiary amines such as 1,4-diazabicyclo[2.2.2]octane, diazabicyclononane, diazabicyclo undecane, 1,1,3,3-tetramethylguanidine, 1,3,4,6,7,8-hexahydro-1-methyl-2H-pyrimido(
- the other additives include a defoaming agent or a phosphate-based plasticizer.
- a silicone-based reactive additive may be used, and an example thereof is Tego Rad 2500.
- the plasticizer include phosphate compounds such as tributyl phosphate.
- the plasticizer may be added together with the fluorine-based compound at a weight ratio of 1:5 to 5:1.
- the plasticizer may have a refractive index of less than 1.5 and a molecular weight of 700 or less.
- the photopolymer composition can be used for hologram recording.
- a hologram recording medium produced from the photopolymer composition can be provided.
- the photopolymer composition of one embodiment when used, it is possible to provide holograms capable of achieving a significantly improved refractive index modulation value and a high diffraction efficiency while having a thinner thickness, as compared with holograms previously known in the art.
- the hologram recording medium can realize a refractive index modulation value of 0.015 or more, 0.020 or more, 0.015 to 0.050, 0.015 to 0.040, or 0.020 to 0.030 even at a thickness of 5 ⁇ m to 30 ⁇ m.
- the hologram recording medium may have a variation value of diffraction efficiency according to the following Equation 4 of 18 % or less, 17 % or less, 16 % or less, 0.01 % to 18 %, 0.01 % to 17 %, or 0.01 % to 16 %.
- Variation value of diffraction efficiency ⁇ Diffraction efficiency ⁇ of a sample stored in a dark room under the constant temperature and humidity conditions of 20 to 25 ° C and 40 to 50 % RH before recording ⁇
- the hologram recording medium can realize diffraction efficiency of 50 % or more, or 85 % or more at a thickness of 5 ⁇ m to 30 ⁇ m.
- the respective components contained therein are homogeneously mixed, dried and cured at a temperature of 20 °C or higher, and then predetermined exposure procedures are undertaken, thereby producing a hologram for optical application in the entire visible range and the near ultraviolet region (300 to 800 nm).
- the components of forming a polymer matrix or the precursor thereof are first homogeneously mixed. Subsequently, the linear silane crosslinking agent is mixed with the catalyst to prepare holograms.
- a mixing device In the photopolymer composition of one embodiment, a mixing device, a stirrer, a mixer, or the like which are commonly known in the art can be used for mixing the respective components contained therein without particular limitation.
- the temperature in the mixing process can be 0 °C to 100 °C, preferably 10 °C to 80 °C, and particularly preferably 20 °C to 60 °C.
- the components of forming the polymer matrix or the precursor thereof in the photopolymer composition of one embodiment are first homogenized and mixed. Subsequently, at the time of adding the linear silane crosslinking agent, the photopolymer composition can be a liquid formulation that is cured at a temperature of 20 °C or more.
- the curing temperature may vary depending on the composition of the photopolymer, and the curing is promoted, for example, by heating at a temperature of from 30 °C to 180 °C.
- the photopolymer may be in state of being injected into or coated onto a predetermined substrate or mold.
- the method of recording a visual hologram on a hologram recording medium produced from the photopolymer composition generally known methods can be used without particular limitation.
- the method described in the holographic recording method of the embodiment to be described later can be adopted as one example.
- a holographic recording method which includes selectively polymerizing photoreactive monomers contained in the photopolymer composition by a coherent laser may be provided.
- a visual hologram can be recorded on the media provided through the process of mixing and curing the photopolymer composition, using known devices and methods under commonly known conditions.
- an optical element including a hologram recording medium can be provided.
- optical element examples include optical lenses, mirrors, deflecting mirrors, filters, diffusing screens, diffraction elements, light guides, waveguides, holographic optical elements having projection screen and/or mask functions, media of optical memory systems and light diffusion plates, optical wavelength multiplexers, reflection-type and transmission-type color filters, and the like.
- An example of an optical element including the hologram recording medium may include a hologram display device.
- the hologram display device includes a light source unit, an input unit, an optical system, and a display unit.
- the light source unit is a portion that irradiates a laser beam used for providing, recording, and reproducing three-dimensional image information of an object in the input unit and the display unit.
- the input unit is a portion that previously inputs three-dimensional image information of an object to be recorded on the display unit, and for example, three-dimensional information of an object such as the intensity and phase of light for each space can be inputted into an electrically addressed liquid crystal SLM, wherein an input beam may be used.
- the optical system may include a mirror, a polarizer, a beam splitter, a beam shutter, a lens, and the like.
- the optical system can be distributed into an input beam for sending a laser beam emitted from the light source unit to the input unit, a recording beam for sending the laser beam to the display unit, a reference beam, an erasing beam, a reading beam, and the like.
- the display unit can receive three-dimensional image information of an object from an input unit, record it on a hologram plate including an optically addressed SLM, and reproduce the three-dimensional image of the object.
- the three-dimensional image information of the object can be recorded via interference of the input beam and the reference beam.
- the three-dimensional image information of the object recorded on the hologram plate can be reproduced into a three-dimensional image by the diffraction pattern generated by the reading beam.
- the erasing beam can be used to quickly remove the formed diffraction pattern.
- the hologram plate can be moved between a position at which a three-dimensional image is inputted and a position at which a three-dimensional image is reproduced.
- a photopolymer composition which can more easily provide a photopolymer layer having improved durability against temperature and humidity while having a large refractive index modulation value, a hologram recording medium using the same, an optical element using the hologram recording medium, and a holographic recording method can be provided.
- the organic layer was collected by extracting with 300 g of dichloromethane three times, and filtered with magnesium sulfate, and then the pressure was reduced to remove all the dichloromethane to obtain 29 g of a liquid product having purity of 95 % or more in a yield of 98 %.
- the silane polymers obtained in Preparation Examples 1 to 3 or Comparative Preparation Examples 1 to 2 a photoreactive monomer (high refractive index acrylate, refractive index 1.600, HR 6022 [Miwon]), the non-reactive low refractive index material of Preparation Example 6, tributyl phosphate ([TBP], molecular weight 266.31, refractive index 1.424, manufactured by Sigma-Aldrich), Safranin O (dye, manufactured by Sigma-Aldrich), Ebecryl P-115 (SK Entis), Borate V (Spectra Group), Irgacure 250 (BASF), a silicone-based reactive additive (Tego Rad 2500), and methyl isobutyl ketone (MIBK) was mixed in a state of cutting off the light, and stirred with a paste mixer for about 3 to 10 minutes to obtain a transparent coating solution.
- a photoreactive monomer high refractive index acrylate, refractive index 1.600, HR 6022 [
- the linear silane crosslinking agents obtained in Preparation Examples 4 to 5 were added to the coating solution, and further stirred for 5 to 10 minutes. Subsequently, 0.02 g of DBTDL as a catalyst was added to the coating solution, stirred for about 1 minute, and then coated in a thickness of 6 ⁇ m onto a TAC substrate (80 ⁇ m thick) using a Meyer bar and dried at 40 °C for 1 hour. Then, the sample was allowed to stand for 24 hours or more in a dark room under constant temperature and humidity conditions of about 25 °C and 50 % RH
- a holographic recording was done via interference of two interference lights (reference light and object light), and the transmission-type recording was done so that the two beams were incident on the same side of the sample.
- the diffraction efficiencies are changed according to the incident angle of the two beams, and become non-slanted when the incident angles of the two beams are the same.
- the diffraction grating is generated vertically to the film because the incident angles of the two beams are the same on the normal basis.
- Equation 1 ⁇ is diffraction efficiency
- P D is an output amount (mW/cm 2 ) of the diffracted beam of a sample after recording
- P T is an output amount (mW/cm 2 ) of the transmitted beam of the recorded sample.
- the lossless dielectric grating of the transmission-type hologram can calculate the refractive index modulation value ( ⁇ n) from the following Equation 2.
- Equation 2 d is a thickness of the photopolymer layer, ⁇ n is a refractive index modulation value, ⁇ (DE) is diffraction efficiency, and ⁇ is a recording wavelength.
- Equation 3 P D is an output amount (mW/cm') of the diffracted beam of the sample after recording, PT is an output amount (mW/cm') of the transmitted beam of the recorded sample, and I 0 is intensity of the recording light.
- the photopolymer-coated surface prepared in each of the examples and comparative examples was allowed to stand for 24 hours or more in a dark room under constant temperature and humidity conditions of 40 °C and 90 % RH, and then the diffraction efficiency ( ⁇ ') was measured in the same manner as in Experimental Example 2. (The sample was kept in a state in which the protective film was removed). Then, the moist heat resistance ( ⁇ n) was determined through the variation value of diffraction efficiency according to the following Equation 4.
- the photopolymer compositions of the examples using the polymer matrix in which the degree of crosslinking was increased by using the linear silane crosslinking agent prepared in Preparation Examples 4 to 5 together with the polymers prepared in Preparation Examples 1 to 3 can provide a hologram in which the variation rate of the diffraction efficiency is as low as 15 % or less even under the moist heat-resistant condition together with the refractive index modulation value ( ⁇ n) of 0.020 to 0.030 as compared with the comparative examples, while the loss amount of laser is equal to that of the comparative examples.
- the holographic recording medium using the photopolymer compositions of Examples 1 to 5, in which the polymer prepared in Preparation Examples 1 to 3 was used exhibit remarkably improved refractive index modulation values and moist heat resistance characteristics, as compared with Comparative Examples 1 and 2 using the polymer obtained in Comparative Preparation Examples 1 and 2 in which the equivalent weight of the silane functional group deviates from the range of 300 g/eq to 2000 g/eq.
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Claims (15)
- Fotopolymerzusammensetzung, umfassend:eine Polymermatrix oder einen Vorläufer hiervon, umfassend ein Reaktionsprodukt zwischen (i) einem (Co)Polymer auf (Meth)acrylatbasis, worin eine funktionelle Gruppe auf Silanbasis in einer verzweigten Kette vorliegt und das Äquivalentgewicht der funktionellen Gruppe auf Silanbasis 300 g/Äq bis 2.000 g/Äq beträgt, und (ii) einem linearen Silan-Vernetzungsmittel;ein fotoreaktives Monomer; undeinen Fotoinitiator.
- Fotopolymerzusammensetzung gemäß Anspruch 1, worin das lineare Silan-Vernetzungsmittel in einer Menge von 10 bis 90 Gewichtsteilen enthalten ist, bezogen auf 100 Gewichtsteile des (Co)Copolymers auf (Meth)acrylatbasis.
- Fotopolymerzusammensetzung gemäß Anspruch 1, worin das Modul (Speichermodul) des Reaktionsprodukts 0,01 MPa bis 5 MPa beträgt, gemessen bei einer Frequenz von 1 Hz bei Raumtemperatur unter Verwendung eines DHR-Geräts (TA Instruments).
- Fotopolymerzusammensetzung gemäß Anspruch 1, worin das lineare Silan-Vernetzungsmittel eine lineare Polyetherhauptkette mit einem gewichtsgemittelten Molekulargewicht von 100 g/mol bis 2.000 g/mol und eine funktionelle Gruppe auf Silanbasis, die endständig oder an eine verzweigte Kette der linearen Polyether-Hauptkette gebunden ist, umfasst.
- Fotopolymerzusammensetzung gemäß Anspruch 4, worin die funktionelle Gruppe auf Silanbasis und die Polyether-Hauptkette über eine Urethanbindung verbunden sind.
- Fotopolymerzusammensetzung gemäß Anspruch 1, worin das Äquivalentgewicht der funktionellen Gruppe auf Silanbasis, die in dem linearen Silan-Vernetzungsmittel enthalten ist, 200 g/Äq bis 1.000 g/Äq beträgt.
- Fotopolymerzusammensetzung gemäß Anspruch 1, worin das Verhältnis zwischen dem Äquivalentgewicht der funktionellen Gruppe auf Silanbasis, die in der verzweigten Kette des (Co)Polymers auf (Meth)acrylatbasis enthalten ist, und dem Äquivalentgewicht der funktionellen Gruppe auf Silanbasis, die in dem linearen Silan-Vernetzungsmittel enthalten ist, von 22:1 bis 0,5:1 beträgt.
- Fotopolymerzusammensetzung gemäß Anspruch 1, worin das fotoreaktive Monomer ein polyfunktionelles (Meth)acrylat-Monomer oder ein monofunktionelles (Meth)acrylat-Monomer umfasst.
- Fotopolymerzusammensetzung gemäß Anspruch 1, worin das fotoreaktive Monomer einen Brechungsindex von 1,5 oder größer aufweist.
- Fotopolymerzusammensetzung gemäß Anspruch 1, worin die Fotopolymerzusammensetzung umfasst: 20 bis 80 Gew.-% der Polymermatrix oder eines Vorläufers hiervon; 10 bis 70 Gew.-% des fotoreaktiven Monomers; und 0,1 bis 15 Gew.-% des Fotoinitiators, bezogen auf das Gesamtgewicht der Fotopolymerzusammensetzung.
- Fotopolymerzusammensetzung gemäß Anspruch 1, worin die Polymermatrix einen Brechungsindex von 1,46 bis 1,53 aufweist.
- Fotopolymerzusammensetzung gemäß Anspruch 1, worin die Fotopolymerzusammensetzung ferner einen Fotosensibilisierungsfarbstoff oder andere Additive umfasst.
- Hologramm-Aufzeichnungsmedium, hergestellt aus der Fotopolymerzusammensetzung gemäß Anspruch 1.
- Optisches Element, umfassend das Hologramm-Aufzeichnungsmedium gemäß Anspruch 13.
- Holographisches Aufzeichnungsverfahren, umfassend das selektive Polymerisieren von fotoreaktiven Monomeren, die in der Fotopolymerzusammensetzung gemäß Anspruch 1 enthalten sind, durch einen kohärenten Laser.
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- 2018-09-11 CN CN201880004036.3A patent/CN110114724B/zh active Active
- 2018-09-11 JP JP2019520132A patent/JP6862012B2/ja active Active
- 2018-09-11 EP EP18860372.4A patent/EP3514627B1/de active Active
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US20190317404A1 (en) | 2019-10-17 |
JP6862012B2 (ja) | 2021-04-21 |
US11079678B2 (en) | 2021-08-03 |
JP2019534353A (ja) | 2019-11-28 |
CN110114724B (zh) | 2022-12-30 |
TWI712645B (zh) | 2020-12-11 |
EP3514627A1 (de) | 2019-07-24 |
KR102156872B1 (ko) | 2020-09-16 |
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